OK, the loaded DLL is in C++.NET, but the common
interfaces DLL and the loader are in C#
I solved the problem by deriving from a class within the
dynamically loaded DLL, instead of trying to derive from
an interface.
I put a default implementation class of the interface into
a common DLL, which I then derive from in the dynamic
module. This gives me a valid instance, so the problem is
solved for me.
Thanks for the response,
Mike
[color=blue]
>-----Original Message-----
>MKoleoso <mkoleoso@cae-gmbh.de> wrote:[color=green]
>> Problem: C#- Unable to create instance of a class
>> implementing from an interface
>>
>> I have:
>>
>> namespace someNamespace
>> {
>> public __gc class SomeClass1
>> {
>> }
>>
>> public __gc class SomeClass2: public ISomeInterface
>> {
>> }
>> }
>>
>> I'm trying to create instances of them both using
>> Assembly.CreateInstance("..."),
>> but SomeClass2 fails because it is flagged as an[/color][/color]
abstract[color=blue][color=green]
>> class. I get the exception:
>> Cannot create an abstract class.
>>
>> What do I need to be able to create instances of[/color][/color]
classes[color=blue][color=green]
>> implementing interfaces?[/color]
>
>With the code you posted above, it should be okay.[/color]
(Having said that,[color=blue]
>I'm not sure what the __gc bit is doing there - I thought[/color]
that was a[color=blue]
>managed C++ thing?)
>
>Could you post a short but complete program demonstrating[/color]
your problem?[color=blue]
>See
http://www.pobox.com/~skeet/csharp/complete.html
>
>--
>Jon Skeet - <skeet@pobox.com>
>
http://www.pobox.com/~skeet/
>If replying to the group, please do not mail me too
>.
>[/color]
